collaborators

6 papers

cs.LG2026

ExTra: Exploratory Trajectory Optimization for Language Model Reinforcement Learning

Wenyang Hu, Junxiang Jia, Zhen Shu +3

Reinforcement Learning with Verifiable Rewards (RLVR) for language-model reasoning can fail at both extremes of task difficulty: easy prompts often produce all-correct, low-diversi…

cs.AI2026

Optimization before Evaluation: Evaluation with Unoptimised Prompts Can be Misleading

Nicholas Sadjoli, Tim Siefken, Atin Ghosh +2

Current Large Language Model (LLM) evaluation frameworks utilize the same static prompt template across all models under evaluation. This differs from the common industry practice…

cs.AI2026

Talk, Evaluate, Diagnose: User-aware Agent Evaluation with Automated Error Analysis

Penny Chong, Harshavardhan Abichandani, Jiyuan Shen +4

Agent applications are increasingly adopted to automate workflows across diverse tasks. However, due to the heterogeneous domains they operate in, it is challenging to create a sca…

cs.CL2026

OCR or Not? Rethinking Document Information Extraction in the MLLMs Era with Real-World Large-Scale Datasets

Jiyuan Shen, Peiyue Yuan, Atin Ghosh +2

Multimodal Large Language Models (MLLMs) enhance the potential of natural language processing. However, their actual impact on document information extraction remains unclear. In p…

cs.LG2025

Expanding the Action Space of LLMs to Reason Beyond Language

Zhongqi Yue, Weishi Wang, Yundaichuan Zhan +3

Large Language Models (LLMs) are powerful reasoners in natural language, but their actions are typically confined to outputting vocabulary tokens. As a result, interactions with ex…

cs.CL2025

Document Intelligence in the Era of Large Language Models: A Survey

Weishi Wang, Hengchang Hu, Zhijie Zhang +3

Document AI (DAI) has emerged as a vital application area, and is significantly transformed by the advent of large language models (LLMs). While earlier approaches relied on encode…